CN104232984B

CN104232984B - A kind of method preparing high Vulcan metal

Info

Publication number: CN104232984B
Application number: CN201410497155.0A
Authority: CN
Inventors: 王琳
Original assignee: JIANGSU XINCHENG COPPER Co Ltd
Current assignee: JIANGSU XINCHENG COPPER Co Ltd
Priority date: 2014-09-25
Filing date: 2014-09-25
Publication date: 2016-06-22
Anticipated expiration: 2034-09-25
Also published as: CN104232984A

Abstract

The invention discloses a kind of method preparing high Vulcan metal, copper 58～65% will be included by weight percentage, silicon 0.05～0.1%, arsenic 0.01～0.018%, calcium 0.1%～1%, lithium 0.05-0.12%, magnesium 0.1-0.6%, ferrum 0.2-0.8%, the alloy raw material of the zinc of aluminum 5-9% and surplus, the operation carrying out melting, cast, hot rolling, roughing and finish rolling manufactures。High Vulcan metal prepared by preparation method of the present invention is not only provided with excellent performance, and it is less costly simultaneously, has good market prospect and economic benefit。

Description

A kind of method preparing high Vulcan metal

Technical field

The present invention relates to copper alloy technology for producing field, specifically a kind of method preparing high Vulcan metal。

Background technology

Aldubra and one-ton brass are to use comparatively general corrosion resistant alloy, but the problem that common aldubra and one-ton brass exist low strength；Patent document number CN1827811 discloses a kind of seamless copper alloy tube for heat exchanger, on the basis of arsenic one-ton brass, add again the elements such as boron, nickel, manganese, improve the corrosion resistance of tubing, but corronil is easily generated electrochemical corrosion, and the problem that one-ton brass exists sherardizing steel ability always；Patent document number CN102776410A discloses a kind of Vulcan metal, and this copper alloy is made up of following component by weight percentage: Mn1.0-1.2%, Si0.5-0.7%, Fe0.05-0.15%, Mg0.8-1.2%, Zn2-4%, Al11-13%, Ti1.2-1.4%, Sc0.3-0.5%, Ni5.5-6.5%, compound rare-earth 0.2-0.3%, wherein mischmetal is La, Ce mixed rare-earth elements, and the percentage ratio of Ce is 30-50%, and surplus is Cu。The Vulcan metal of this patent employs the metal material that the prices such as substantial amounts of stannum, scandium, titanium and rare earth metal are high, and copper content is high, produces synthesis difficulty and strengthens, limits its promotion and application scope。

Summary of the invention

It is an object of the invention to for above-mentioned deficiency of the prior art, it is provided that a kind of preparation method is with low cost, the high Vulcan metal method of function admirable。

It is an object of the invention to be achieved through the following technical solutions:

A kind of method preparing high Vulcan metal, this high Vulcan metal includes copper 58～65% by weight percentage, silicon 0.05～0.1%, arsenic 0.01～0.018%, calcium 0.1%～1%, lithium 0.05-0.12%, magnesium 0.1-0.6%, ferrum 0.2-0.8%, the zinc of aluminum 5-9% and surplus, described preparation method includes following concrete steps:

1) melting: in selected ratio by fine copper ingot, zinc ingot metal and copper and magnesium, ferrum, aluminum, silicon, arsenic, calcium intermediate alloy carry out melting at 1000 DEG C～1100 DEG C after dispensing, be incubated 1-3 hour, obtain melting charge；2) cast: the melting charge of step 1 stands and is cooled to temperature when reaching 900 DEG C～960 DEG C, carries out cast, obtains ingot casting；3) hot rolling: the ingot casting of step 2 is carried out 5～9 rollings, hot-rolled temperature 780 DEG C～850 DEG C；4) roughing: the ingot casting after step 3 hot rolling is carried out milling face, then carries out roughing, and the annealing temperature of roughing is 500～650 DEG C, annealing time 2～4 hours；

5) finish rolling: the ingot casting after roughing is proceeded finish rolling, the annealing temperature of finish rolling is 280～350 DEG C, annealing time 2～4 hours。

More preferably scheme is, this high Vulcan metal includes copper 58～60%, silicon 0.08～0.1%, arsenic 0.014～0.018%, calcium 0.1%～0.5%, lithium 0.05-0.08%, magnesium 0.1-0.4%, ferrum 0.2-0.5%, the zinc of aluminum 5-7% and surplus by weight percentage。

Most preferred scheme is that this high Vulcan metal includes copper 60%, silicon 0.1%, arsenic 0.018%, calcium 0.5%, lithium 0.08%, magnesium 0.4%, ferrum 0.5%, the zinc of aluminum 7% and surplus by weight percentage。

Antimony is the objectionable impurities in pyrite, declines with temperature, and antimony dissolubility in alpha brass strongly reduces；When antimony content is less than 0.1%, frangible compounds Cu will be precipitated out₂Sb, in net distribution on crystal boundary, the serious cold-forming property damaging pyrite。Antimony also promotes pyrite to produce red brittleness, and because antimony eutectic temperature in In Crystal Solid Copper is 645 DEG C, adding trace lithium can form dystectic Li with antimony₃Sb (fusing point 1145 DEG C), thus alleviating the antimony adverse effect to pyrite plasticity。The addition of lithium and calcium can form the element of high melting compound with impurity, and all can effectively alleviate or disappear deimpurity adverse effect, thus eliminating red brittleness。

By the residual stress in copper alloy and corrosive medium ammonia, SO₂And the synergy of humid air produces stress corrosion so that copper alloy can produce the phenomenon automatically broken during storage, in copper alloy, the amount containing Zn is more high, more easy autoclasis。For avoiding copper alloy autoclasis, it is possible to carry out process annealing, eliminate the residual internal stress that goods produce when cold working。Additionally, add a certain amount of As or Si of people in pyrite also can substantially reduce its autoclasis tendency。Meanwhile, adding a certain amount of As in copper alloy, can prevent copper alloy dezincification, arsenic also makes copper alloy surface form firm protecting film, improves the copper alloy corrosion resistance to sea water。

The preparation method of the high Vulcan metal of the present invention includes following concrete steps: after tested, prepared by preparation method of the present invention high Vulcan metal the key technical indexes such as following table:

Tensile strength MPa	Hardness HV	Elongation percentage %	Elastic modelling quantity MPa
				≥600	≥210	≥20	≥240

Visible, prepared by preparation method of the present invention high Vulcan metal there is higher tensile strength, elastic preferably, there is excellent processing characteristics。

The present invention has beneficial effect highlighted below:

High Vulcan metal corrosion resistance prepared by preparation method of the present invention is strong and has good processing characteristics, and meanwhile, its copper content only 58～65%, far below tin bronze, to the state in short supply alleviating copper resource, the utilization rate improving resource has great importance；Therefore, prepared by preparation method of the present invention high Vulcan metal is not only provided with excellent performance, and it is less costly simultaneously, has good market prospect and economic benefit。

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described:

Embodiment one:

Follow these steps to prepare high Vulcan metal:

Step 1: be copper 58% by weight percentage, silicon 0.1%, arsenic 0.018%, calcium 0.1%%, lithium 0.05%, magnesium 0.1%, ferrum 0.8%, the zinc of aluminum 9% and surplus carries out dispensing, by fine copper ingot, zinc ingot metal and copper and magnesium, ferrum, aluminum, silicon, arsenic, calcium intermediate alloy melting at 1000 DEG C～1100 DEG C, it is incubated 1 hour, obtains melting charge；Step 2: the melting charge of step 1 stands and is cooled to temperature when reaching 960 DEG C, carries out cast, obtains ingot casting；Step 3: the ingot casting of step 2 is carried out 5 rollings, hot-rolled temperature 850 DEG C；Step 4: the ingot casting after step 3 hot rolling is carried out milling face, then carries out roughing, and the annealing temperature of roughing is 650 DEG C, annealing time 4 hours；

Step 5: the ingot casting after roughing is proceeded finish rolling, the annealing temperature of finish rolling is 280 DEG C, annealing time 2 hours。

After tested, the technical specification of high Vulcan metal prepared by the present embodiment is:

Tensile strength MPa	Hardness HV	Elongation percentage %	Elastic modelling quantity MPa
				655	226	26	270

Embodiment two:

Follow these steps to prepare high Vulcan metal:

Step 1: be copper 65% by weight percentage, silicon 0.05%, arsenic 0.01%, calcium 0.1%～1%, lithium 0.12%, magnesium 0.6%, ferrum 0.2%, the zinc of aluminum 5% and surplus carries out dispensing, by fine copper ingot, zinc ingot metal and copper and magnesium, ferrum, aluminum, silicon, arsenic, calcium intermediate alloy melting at 1000 DEG C～1100 DEG C, it is incubated 2 hours, obtains melting charge；Step 2: the melting charge of step 1 stands and is cooled to temperature when reaching 930 DEG C, carries out cast, obtains ingot casting；Step 3: the ingot casting of step 2 is carried out 7 rollings, hot-rolled temperature 800 DEG C；Step 4: the ingot casting after step 3 hot rolling is carried out milling face, then carries out roughing, and the annealing temperature of roughing is 500 DEG C, annealing time 2 hours；

Step 5: the ingot casting after roughing is proceeded finish rolling, the annealing temperature of finish rolling is 350 DEG C, annealing time 4 hours。

Tensile strength MPa	Hardness HV	Elongation percentage %	Elastic modelling quantity MPa
				621	235	31	269

Embodiment three:

Follow these steps to prepare high Vulcan metal:

Step 1: be copper 60% by weight percentage, silicon 0.1%, arsenic 0.018%, calcium 0.5%, lithium 0.08%, magnesium 0.4%, ferrum 0.5%, the zinc of aluminum 7% and surplus carries out dispensing, by fine copper ingot, zinc ingot metal and copper and magnesium, ferrum, aluminum, silicon, arsenic, calcium intermediate alloy melting at 1000 DEG C～1100 DEG C, it is incubated 2 hours, obtains melting charge；Step 2: the melting charge of step 1 stands and is cooled to temperature when reaching 900 DEG C, carries out cast, obtains ingot casting；Step 3: the ingot casting of step 2 is carried out 9 rollings, hot-rolled temperature 780 DEG C；Step 4: the ingot casting after step 3 hot rolling is carried out milling face, then carries out roughing, and the annealing temperature of roughing is 600 DEG C, annealing time 3 hours；

Step 5: the ingot casting after roughing is proceeded finish rolling, the annealing temperature of finish rolling is 300 DEG C, annealing time 3 hours。

Tensile strength MPa	Hardness HV	Elongation percentage %	Elastic modelling quantity MPa
				712	259	33	278

It is above presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, when produced function is without departing from the scope of technical solution of the present invention, belong to protection scope of the present invention。

Claims

1. the method preparing high Vulcan metal, it is characterized in that, this high Vulcan metal includes copper 58～65% by weight percentage, silicon 0.05～0.1%, arsenic 0.01～0.018%, calcium 0.1%～1%, lithium 0.05-0.12%, magnesium 0.1-0.6%, ferrum 0.2-0.8%, the zinc of aluminum 5-9% and surplus, described preparation method includes following concrete steps: 1) melting: in selected ratio by fine copper ingot, zinc ingot metal and copper and magnesium, ferrum, aluminum, silicon, arsenic, calcium intermediate alloy carry out melting at 1000 DEG C～1100 DEG C after dispensing, it is incubated 1-3 hour, obtains melting charge；2) cast: the melting charge of step 1 stands and is cooled to temperature when reaching 900 DEG C～960 DEG C, carries out cast, obtains ingot casting；3) hot rolling: the ingot casting of step 2 is carried out 5～9 rollings, hot-rolled temperature 780 DEG C～850 DEG C；4) roughing: the ingot casting after step 3 hot rolling is carried out milling face, then carries out roughing, makes annealing treatment after roughing, and annealing temperature is 500～650 DEG C, annealing time 2～4 hours；

5) finish rolling: the ingot casting after roughing is proceeded finish rolling, makes annealing treatment after finish rolling, annealing temperature is 280～350 DEG C, annealing time 2～4 hours。

2. the method preparing high Vulcan metal according to claim 1, it is characterized in that, this high Vulcan metal includes copper 58～60% by weight percentage, silicon 0.08～0.1%, arsenic 0.014～0.018%, calcium 0.1%～0.5%, lithium 0.05-0.08%, magnesium 0.1-0.4%, ferrum 0.2-0.5%, the zinc of aluminum 5-7% and surplus。